Linear generator with induction coil which moves with respect to fixed permanent magnets

Abstract

A linear generator includes an induction system including coils and magnets, to which a relative motion is imparted by moving the coils or permanent magnets integrally with a piston of an internal combustion engine provided with return springs having one end facing the interior of a piston head, in which the coils are fixed on a movable bell coaxial with the cylinder, and the magnets are fixed on a second fixed bell coaxial with the first bell, the latter being made integral with the piston by a hollow shaft coaxial with the cylinder. The ends of the coils are connected to wires which pass through the cavity of the hollow shaft and reach the ends of the springs facing the interior of the head of the piston, and the other end of each spring is in contact with an output terminal for electric current flowing in the coils.

What is claimed is:  
     
       1. A linear generator including an electromagnetic induction system, comprising: 
       introduction coils fixed on a first movable bell connected to and moved by a reciprocating piston of an internal combustion engine by a hollow shaft which is located inside and coaxial with a hollow cylinder;  
       permanent magnets fixed on a second bell fixed integrally to and coaxial with said hollow cylinder;  
       return springs located inside the hollow cylinder and surrounding the hollow shaft; and  
       wherein the ends of the induction coils are connected to conducting wires which pass through the hollow shaft and connect to one end of each respective spring, while the other end of each spring is connected to an output terminal.  
     
     
       2. The linear generator according to  claim 1 , wherein the first moving bell, on which the induction coils are fixed, is located coaxially inside the second fixed bell on which the permanent magnets are fixed. 
     
     
       3. The linear generator according to  claim 1 , further comprising one or more scavenging bellows, and one or more exhaust ducts located inside the first bell and the second bell.